feat(project): 选定所属项目组后自动带出负责人

项目管理新增/编辑弹窗选择或更换项目组时，用该组负责人填充表单负责人字段，仍可手工修改。

Co-authored-by: Cursor <cursoragent@cursor.com>

web-admin/src/views/project-management/ManagementPage.vue

@@ -144,7 +144,7 @@
               label="所属项目组"
               prop="teamId"
               :rules="[{ required: true, message: '请选择项目组' }]"
-              ><el-select v-model="form.teamId" filterable
+              ><el-select v-model="form.teamId" filterable @change="onTeamChange"
                 ><el-option
                   v-for="team in teams"
                   :key="team.id"
@@ -333,6 +333,11 @@
     })
     search()
   }
+  function onTeamChange(teamId: string) {
+    if (readonly.value || isTeam.value) return
+    const team = teams.value.find((item) => item.id === teamId)
+    if (team?.leaderUserId) form.value.leaderUserId = team.leaderUserId
+  }
   async function edit(row?: ProjectRecord, view = false) {
     readonly.value = view
     editingId.value = row?.id || ''